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Browsing Folders in MSYS
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Laravel Schema onDelete set null
...ysql values (see ../ vendor / laravel / framework / src / Illuminate / Database / Schema / Grammars / Grammar.php)
– Dirk Jan
Mar 23 at 14:47
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Windows 7 SDK installation failure
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Microsoft now has a knowledge base article called Windows SDK Fails to Install with Return Code 5100 that describes this problem and its fix:
This issue occurs when you install the Windows 7 SDK on a computer that has a newer version of the Visual C++...
IntelliJ IDEA jump from interface to implementing class in Java
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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PHP multidimensional array search by value
...me, in this example you have to search string or just use == instead ===.
Based on angoru answer. In later versions of PHP (>= 5.5.0) you can use one-liner.
$key = array_search('100', array_column($userdb, 'uid'));
Here is documentation: http://php.net/manual/en/function.array-column.php.
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Displaying better error message than “No JSON object could be decoded”
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for the example given by tom:
>>> rson.loads('[1,2,]')
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rson.base.tokenizer.RSONDecodeError: Unexpected trailing comma: line 1, column 6, text ']'
RSON is a designed to be a superset of JSON, so it can parse JSON files. It also has an alternate syntax which is much nicer for humans ...
Quickly reading very large tables as dataframes
...quickly reading CSV files.
Trying to store as much data as you can in databases rather than flat files. (As well as being a better permanent storage medium, data is passed to and from R in a binary format, which is faster.) read.csv.sql in the sqldf package, as described in JD Long's answer, impor...
Does use of final keyword in Java improve the performance?
...t it's by far the most common JVM, so...)
To my mind you should use final based on clear design and readability rather than for performance reasons. If you want to change anything for performance reasons, you should perform appropriate measurements before bending the clearest code out of shape - th...
Android: Temporarily disable orientation changes in an Activity
My main activity has some code that makes some database changes that should not be interrupted. I'm doing the heavy lifting in another thread, and using a progress dialog which I set as non-cancellable. However, I noticed that if I rotate my phone it restarts the activity which is REALLY bad for the...
How do I select an entire row which has the largest ID in the table?
... It could be a foreign key, but as I said, I'm just guessing based on the name that it isn't. MySQL is historically known to have bad performance with subselects. That has vastly improved in newer versions though, so depends what version you're using. However, rethinking it, this parti...